Anti-freeze tester Material:glass tube,bubber, pp pipe Size:6" Fast and accurate testing of min freezing point. Easy to us Feature:1.Material:glass tube with rubber ball and tip2.Size:8"3.Instruction of use:First to install the tester carefully,let the big head glass tube which has sensing material in stay bellow,then fit the rubber tail at the bottom.Hold the tester vertically,put the rubber ...

... for 2-8S 2.Measure 1-6 Cell Lipo Battery Lipo Battery Voltage Meter With Programmable Buzzer Alarm : Measures 1-6 Cell Lipo ... from either the charging or discharging leads of the battery. Normally a batterymeter only measures 2-6 cell, this one does 1 ... -6 cell. It is a hard to find total battery monitoring ...